Add source code for ctrtool

ctrtool/src/LzssProcess.cpp

@@ -0,0 +1,54 @@
+#include "LzssProcess.h"
+#include "lzss.h"
+
+#include <tc/io.h>
+
+ctrtool::LzssProcess::LzssProcess() :
+	mModuleLabel("ctrtool::LzssProcess"),
+	mInputStream(),
+	mExtractPath()
+{
+}
+
+void ctrtool::LzssProcess::setInputStream(const std::shared_ptr<tc::io::IStream>& input_stream)
+{
+	mInputStream = input_stream;
+}
+
+void ctrtool::LzssProcess::setExtractPath(const tc::io::Path& extract_path)
+{
+	mExtractPath = extract_path;
+}
+
+void ctrtool::LzssProcess::process()
+{
+	if (mExtractPath.isSet())
+	{
+		// read input file into memory
+		// check if input file is too large
+		if (tc::is_int64_t_too_large_for_size_t(mInputStream->length()))
+		{
+			throw tc::InvalidOperationException(mModuleLabel, "Input file is too large.");
+		}
+
+		// allocate memory for file
+		auto compressed_data = tc::ByteData((size_t)mInputStream->length());
+
+		// read file
+		mInputStream->seek(0, tc::io::SeekOrigin::Begin);
+		mInputStream->read(compressed_data.data(), compressed_data.size());
+
+		// decompress
+		tc::ByteData decompressed_data = tc::ByteData(lzss_get_decompressed_size(compressed_data.data(), compressed_data.size()));
+		lzss_decompress(compressed_data.data(), compressed_data.size(), decompressed_data.data(), decompressed_data.size());
+
+		// open output file
+		tc::io::LocalFileSystem local_fs;
+		std::shared_ptr<tc::io::IStream> output_stream;
+		local_fs.openFile(mExtractPath.get(), tc::io::FileMode::OpenOrCreate, tc::io::FileAccess::Write, output_stream);
+
+		// write decompressed data
+		output_stream->seek(0, tc::io::SeekOrigin::Begin);
+		output_stream->write(decompressed_data.data(), decompressed_data.size());
+	}
+}